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Well that will depend on what are the materials they are being built with when that happens. The materials being used presently won't scale to such big numbers

Well that will depend on what are the materials they are being built with when that happens. The materials being used presently won't scale to such big numbers as you purpose, so it will all depend on the alternative materials being used by then.

gibybo 10y ago
They won't? What materials are we limited by?
- astrange 10y ago
  It's unclear if we have enough lithium and cobalt. But nobody's really tried and Elon doesn't seem worried about it.